Investment casting assembly pouring gate system for barrel-shaped steel casting

Abstract

The utility model discloses a pouring gate system for a cylindrical steel casting investment casting assembly tree. The pouring gate system comprises a pouring gate system body with an independent inner side feeding head. Comprising the following steps: the upper part of a sprue is connected with a top cross gate which is correspondingly connected with a top feeding head; the lower part of the straight pouring gate is connected with inner side transverse pouring gates, each independent inner side transverse pouring gate is connected with an inner side feeding head, and the inner side feeding heads are larger than the inner side transverse pouring gates; the inner side feeding head is connected with an inner side ingate; and each inner side ingate is correspondingly connected with each layer of part of the steel casting. And during mold filling and cooling of the metal liquid, the metal liquid in the inner side feeding head on each independent inner side cross gate, the inner side cross gate and the inner side ingate is fed when the steel casting is cooled, so that the problem that casting defects occur due to the fact that the metal liquid in the pouring gates cannot meet feeding when the steel casting is cooled is solved.

Description

Technical Field

[0001] The utility model relates to a barrel-shaped steel casting investment casting assembly tree runner system, belonging to the technical field of casting runners. Background Art

[0002] When a cylindrical steel casting is investment cast, due to its small thickness, it is necessary to fill each layer of the casting through a runner structure of a group tree.

[0003] The runner structure of the existing group tree is shown in the Chinese patent announcement CN110732655A, and the disclosed technology is: each branch runner is staggered on both sides of the main runner along the vertical direction; although each branch runner is located on the side of the main runner to achieve filling of each layer of the cast steel part, when the cast steel part is cooled, the metal liquid in the branch runner cannot meet the shrinkage compensation and casting defects occur. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a cylindrical steel casting investment casting assembly tree runner system.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a cylindrical steel casting investment casting assembly tree runner system, comprising:

[0007] Gating system with independent internal feeding riser.

[0008] The method comprises: the upper part of the sprue is connected with a top cross runner, and the top cross runner is correspondingly connected with a top shrinkage feeding riser;

[0009] The lower part of the sprue is connected to an inner runner, and each independent inner runner is connected to an inner feeding riser, and the inner feeding riser is larger than the inner runner;

[0010] The inner feeding riser is connected with an inner ingates; each inner ingates is connected to a corresponding layer of the steel casting.

[0011] The inner ingates are as large as the inner runners.

[0012] The top of the sprue is a cone; the sprue is located at the center of the steel casting.

[0013] The top cross runners are symmetrically distributed on the outer peripheral sides of the upper part of the straight runner.

[0014] The inner side runners are multiple layers distributed at intervals at the lower part of the sprue, and the inner side runners of the same layer are symmetrically distributed on the outer peripheral sides of the sprue.

[0015] The steel casting is connected to the lower part of the top feeding riser through a top ingrown; and a dewaxing channel is provided at the top of the top ingrown.

[0016] The sprue, dewaxing channel, top feeding riser, top ingrown, steel casting, top cross runner, inner ingrown, inner feeding riser and inner cross runner are a tree-shaped assembly formed by connecting wax parts.

[0017] The beneficial effect of the utility model is that when the metal liquid is filled and cooled, the inner shrinkage feed riser on each independent inner cross runner, the inner cross runner and the metal liquid in the inner runner feed the steel casting when it is cooled, thus solving the problem of casting defects caused by the metal liquid in the separate runners failing to meet the shrinkage feeding requirements when the steel casting is cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a main schematic diagram of the utility model;

[0019] In the figure: 1-sprue; 2-dewaxing channel; 3-top feeding riser; 4-top ingode; 5-casting; 6-top cross runner; 7-side ingode; 8-inner feeding riser; 9-inner cross runner. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0021] like Figure 1 shown.

[0022] The present application discloses a cylindrical steel casting investment casting assembly tree runner system, comprising:

[0023] The top of the sprue 1 is a cone, and the top of the sprue 1 is connected to a top cross runner 6, and the top cross runner 6 is correspondingly connected to the top shrinkage riser 3. The top cross runner 6 is symmetrically distributed on the outer side of the top of the sprue 1.

[0024] The lower part of the sprue 1 is connected with an inner runner 9 ; the inner runner 9 is a plurality of layers distributed at intervals at the lower part of the sprue 1 , and the inner runners 9 of the same layer are symmetrically distributed on the outer peripheral side of the sprue 1 .

[0025] Each independent inner runner 9 is connected to an inner feeding riser 8, which is larger than the inner runner 9; the inner feeding riser 8 is connected to an inner ingrowth 7 which is as large as the inner runner 9, and each inner ingrowth 7 is connected to each layer of the steel casting 5.

[0026] The sprue 1 is located at the center of the steel casting 5; the steel casting 5 is connected to the lower part of the top feeding riser 3 through a top ingrate 4; and a dewaxing channel 2 is provided at the top of the top ingrate 4.

[0027] The sprue 1, dewaxing channel 2, top feeding riser 3, top ingrown channel 4, steel casting 5, top runner 6, inner ingrown channel 7, inner feeding riser 8 and inner ingrown channel 9 are all connected by wax parts to form a tree-shaped assembly. After sandblasting and finalization, high-temperature molten metal liquid is injected, and the wax mold is melted and discharged from the dewaxing channel 2 to completely fill the molten metal liquid. When the metal liquid is filled and cooled, the inner feeding riser 8, inner ingrown channel 9 and inner ingrown channel 7 on each independent inner ingrown channel 9 feed the steel casting 5 when it is cooled, thereby solving the problem that the metal liquid in the separate runners cannot meet the feeding needs when the steel casting is cooled and casting defects occur.

[0028] Since each inner feeding riser 8 is independent on each independent inner cross runner 9, it is avoided that each inner feeding riser 8 is connected to each other and thus flows downward due to gravity, thereby affecting the feeding effect.

Claims

1. A cylindrical steel casting investment casting assembly tree runner system, characterized in that: A runner system with an independent inner feeding riser (8); The invention comprises: a top cross runner (6) is connected to the upper part of the straight runner (1), and the top cross runner (6) is correspondingly connected to the top shrinkage feeding riser (3); The lower part of the sprue (1) is connected to an inner runner (9), each independent inner runner (9) is connected to an inner feeding riser (8), and the inner feeding riser (8) is larger than the inner runner (9); The inner feeding riser (8) is connected to an inner ingrown (7); each inner ingrown (7) is correspondingly connected to each layer of the steel casting (5).

2. The investment casting assembly runner system for cylindrical steel castings according to claim 1, characterized in that: The inner ingrown channel (7) is as large as the inner runner (9).

3. The investment casting assembly runner system for a cylindrical steel casting according to claim 1, characterized in that: The top of the sprue (1) is a cone; the sprue (1) is located at the center of the steel casting (5).

4. The investment casting assembly runner system for a cylindrical steel casting according to claim 1, characterized in that: The top runner (6) is symmetrically distributed on the upper peripheral side of the straight runner (1).

5. The investment casting assembly runner system for cylindrical steel castings according to claim 1, characterized in that: The inner side runners (9) are multiple layers that are spaced apart and distributed at the bottom of the sprue (1), and the inner side runners (9) of the same layer are symmetrically distributed on the outer peripheral sides of the sprue (1).

6. The investment casting assembly runner system for cylindrical steel castings according to claim 1, characterized in that: The steel casting (5) is connected to the lower part of the top feeding riser (3) via a top ingrown channel (4); a dewaxing channel (2) is provided at the top of the top ingrown channel (4).

7. The investment casting assembly runner system for a cylindrical steel casting according to claim 6, characterized in that: The sprue (1), dewaxing channel (2), top feeding riser (3), top ingrown (4), steel casting (5), top cross runner (6), inner ingrown (7), inner feeding riser (8) and inner cross runner (9) are a tree-shaped assembly formed by connecting wax parts.

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